Square modified brilliant cut gemstone



FIG. 1 a top view of a square modified brilliant cut gemstone in accordance with the new design;

FIG. 2 is a bottom view of the square modified brilliant cut gemstone shown in FIG. 1; and,

FIG. 3 is a side view of the square modified brilliant cut gemstone shown in FIG. 1. 

The ornamental design for a square modified brilliant cut gemstone, as shown and described. 